Results 71 to 80 of about 78,965 (291)

Theory of PbTiO3, BaTiO3, and SrTiO3 Surfaces

, 1999
First-principles total-energy calculations are carried out for (001) surfaces of the cubic perovskite ATiO3 compounds PbTiO3, BaTiO3, and SrTiO3. Both AO-terminated and TiO2-terminated surfaces are considered, and fully-relaxed atomic configurations are ...
Meyer, B., Padilla, J., Vanderbilt, David   +2 more
core   +2 more sources

Zwitterionic Self‐Assembled Monolayer for Simultaneous Noise Suppression and Hole Extraction in High‐Performance Near‐Infrared Organic Photodetectors

Advanced Functional Materials, EarlyView.
This study presents a new hole transporting material (HTM) mechanism for self‐assembled monolayers in near‐infrared organic photodetectors. The formation of zwitterions induces a strong electric field that significantly increases the work function of HTM‐coated indium tin oxide substrates. The devices exhibit low dark current and noise, along with high
Jiyoung Shin, Gyeong Min Lee, Juyeon Shin, Jaewoong Kim, Tae Hyuk Kim, Do Yeon Kim, Myeong In Kim, Kyeounghak Kim, Jae Won Shim, In Hwan Jung   +9 more
wiley   +1 more source

Templated growth of oriented layered hybrid perovskites on 3D-like perovskites

Nature Communications, 2020
The orientation of layered perovskites plays a crucial role in their charge transport behavior and hence, the efficiency of related solar cells. Here, the authors find that preformed 3D-like perovskites can efficiently template the growth of layered ...
Jifei Wang, Shiqiang Luo, Yun Lin, Yifu Chen, Yehao Deng, Zhimin Li, Ke Meng, Gang Chen, Tiantian Huang, Si Xiao, Han Huang, Conghua Zhou, Liming Ding, Jun He, Jinsong Huang, Yongbo Yuan   +15 more
doaj   +1 more source

Two-Dimensional Halide Pb-Perovskite–Double Perovskite Epitaxial Heterostructures

Journal of the American Chemical Society, 2023
Epitaxial heterostructures of two-dimensional (2D) halide perovskites offer a new platform for studying intriguing structural, optical, and electronic properties. However, difficulties with the stability of Pb- and Sn-based heterostructures have repeatedly slowed the progress.
Singh, Ajeet, Yuan, Biao, Rahman, Md. Habibur, Yang, Hanjun, De, Angana, Park, Jee Yung, Zhang, Shuchen, Huang, Libai, Mannodi-Kanakkithodi, Arun, Pennycook, Timothy J., Dou, Letian   +10 more
openaire   +3 more sources

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

Advanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa, Lin‐Ding Yuan, Stephen D. Wilson, James M. Rondinelli   +3 more
wiley   +1 more source

Recent progress with one-dimensional metal halide perovskites: from rational synthesis to optoelectronic applications

NPG Asia Materials, 2023
Metal halide perovskites can be readily synthesized, they exhibit tunable physical properties and excellent performance, and they are heavily studied optoelectronic materials. Compared to the typical three-dimensional perovskites, morphological-level one-
Dawei Duan, Chuangye Ge, Md Zahidur Rahaman, Chun-Ho Lin, Yumeng Shi, Haoran Lin, Hanlin Hu, Tom Wu   +7 more
doaj   +1 more source

The study of new double perovskites K2AgAsX6 (X = Cl, Br) for energy-based applications

Journal of Taibah University for Science, 2023
Halide double perovskites are the best alternative to Pb-halide perovskites. These materials play an important role in renewable energy generation. Therefore, we explore the physical properties of K2AgAsX6 (X = Cl, Br) double halide perovskites using ...
Malak Azmat Ali, Razan A. Alshgari, Aboud Ahmed Awadh Bahajjaj, Mika Sillanpää   +3 more
doaj   +1 more source

Half-metallic antiferromagnets in double perovskites: LaAVRuO$_6$ (A=Ca, Sr, and Ba)

, 2001
Based on the theoretical exploration of electronic structures, we propose that the ordered double perovskites LaAVRuO$_6$ and LaVO$_3$/ARuO$_3$ (001) superlattice (A = Ca, Sr and Ba) are strong candidates for half-metallic (HM) antiferromagnets (AFMs ...
A. Callaghan, A. Gulino, A. W. Sleight, B. I. Min, C. Zener, G. Cao, G. Khaliullin, G. L. Catchen, G. Pari, H. Sawada, H. van Leuken, J. H. Park, J. M. Longo, J. T. Rijssenbeek, J.-S. Kang, K. Maiti, K. Ueda, K.-I. Kobayashi, K.-I. Kobayashi, K.-P. Hong, M. Imada, P. Lu, S. J. Youn, S. K. Kwon, S. K. Kwon, S. K. Kwon, S. Miyasaka, T. C. Gibb, T. H. Kim, T. Saha-Dasgupta, W. Choi, W. E. Pickett, W. E. Pickett, Y. Moritomo   +33 more
core   +1 more source

Ultrastable Photoactive Halide Perovskite Nanocrystal‐Sensitized SnO2 Nanorods for Room‐Temperature NO2 Detection

Advanced Functional Materials, EarlyView.
ABSTRACT Metal oxide (MOx)‐based NO2 gas sensors typically require high temperatures or ultraviolet light, limiting their practical use. To enable visible‐light activation at room temperature, efficient and stable photosensitizers should be integrated with nanostructured MOx hosts.
Yeonji Yuk, Dokyum Kim, Jun‐Cheol Park, Yoonsung Jung, Inhyeok Oh, Donghyeon Lee, Yejoon Kim, Ji‐Eun Yeo, Young Min Song, Chang‐Lyoul Lee, Sanghan Lee   +10 more
wiley   +1 more source

A New Threshold Switching Device With Tunable Negative Differential Resistance Based on ErMnO3 Polymorphs

Advanced Functional Materials, EarlyView.
Polymorph engineering in ErMnO3 enables low‐voltage, forming‐free threshold switching with tunable negative differential resistance. Conducting orthorhombic regions embedded in an insulating hexagonal matrix provide controlled Joule‐heating‐enhanced Poole–Frenkel transport. The hexagonal phase prevents excessive heating and breakdown.
Rong Wu, Florian Maudet, Thanh Luan Phan, Wassim Hamouda, Richard Schroedter, Ahmet Samil Demirkol, Ronald Tetzlaff, Veeresh Deshpande, Catherine Dubourdieu   +8 more
wiley   +1 more source